I haven't found evidence of one black soldier fly in NW PA. I have had carrots, strawberry, lettuce, apple, cardboard, and scraps of paper in a bucket hanging on my porch for a month. The sun hits the bucket in the afternoon, shaded all morning. All I have seen is fruit flys and houseflys in it, maggots galore, nothing resembling a black soldier fly or its larva. My conclusin is we have none in Pennsylvania.
